Antiskidding device.



A. S. CAHN & J. W. JOHNSON.

ANTISKIDDING DEVICE.

APPLICATION FILED DEC. 22, 1911.

3ww/wto'os (/0 15' Galen,

J W fo/bwon,

, 1 dttowm Patented Nov. 24, 1914.

-' an STATES 5PATE OFFICE.

ALBERT S. CAHN AND JOHN W. JOHNSON, OF KANSAS CITY, MISSOURI.

ANTISKIDDIN G DEVICE.

Specification of Letters Patent. Pat t '2 1914.

Application filed December 22, 1911. Serial No. 867,304.

To all whom it may concern:

Be it known that we, ALBERT S. CAHN and JOHN W. J OHNSON, citizens of the United States, residing at Kansas City, in the county .of Jackson and State of Missouri,

have invented certain new and useful Improvements in. Antiskidding Devices, of which the following is a. specification.

This invention has relation to anti-skidding devices especially adapted to be used upon automobiles, and has for its object to provide a device of simple structure in the form of an attachment which may be easily and quickly applied to the frame or supporting members of the automobile; parts are so arranged that the working members of the anti-skidding device may be brought in contact with the surface of a street or roadway by the use of afoot lever or treadle, while at times when the use of the anti-skidding device is not necessary the saidwheels remain elevated above the surface of the street or roadway.

With the above objects in view the attachment includes clips adapted to be applied to the axle or other supporting members of the frame of the automobile. Arms are pivotally connected with the said clips and a spacing member is interposed between the arms. A shaft is carried at the free ends ofthe arms and serves as means for connecting the' free ends of the said arms together. The free ends of the arms are slotted and wheels having roughened peripheries are located in the said slots and are journaled upon the said shaft. A foot lever or treadle mechanism is provided for swinging the attachment so that the wheels carrie thereby may be brought in contact with the surface of the street or roadway and thereby prevent skidding of the machine.

A still further object of the invention is generally to improve this class of devices so as to increase their utility, durability and eificiency.

Further objects and advantages will ap pear in the following description, it being understood that various changes in form, proportions and minor details of construction may be resorted to within the scope'of the appended claim. 5

For a full-understanding of the invention reference is to'be had to the'following description and accompanying drawing, in which: 1

; Figure 1 is 'a sideelevation of an auto- The mobile 'with one of the rear wheels remove d showing the device applied; Fig. 2 is a perspective view of the anti-skidding device.

Corresponding and like parts are referred to in the following description and indicated in all the views of the accompanying drawing by the same reference characters. The anti-skidding device comprises clips 1 which are adapted to be bolted or other-.

wise secured upon the axle or other parts of" the frame of an automobile in the vicinity of the rear axle thereof; A bar 2 is interposed between arms 3 and serves as means for positively holdin theclips spaced from each other at a suitable predetermined distance. Arms 3 are pivoted between the opposite side portions of-the clips 1 and are located beyond the ends of the cross bar 2. The said arms 3 are provided attheir free end portions with longitudinally disposed slots 4. A shaft 5 which tapers from its extremities to form a central enlarged portion,

as shown connects the free end'portions of the arms 3 together but passes'transversely. across the slots 4 provided therein, the ex-- tremities of the arm extendin across. the slots being rounded. The sai shaft 5 is held against longitudinal movement by means of cotter pins 6 or other suitable securing devices which are mounted upon the said shaft and which bear against the sides of the arms 3. Wheels 7 are journaled upon the rounded extremities of the shaft 5 and are received within the slots 4 of the arms 3.

These wheels are provided with roughened.

peripheries and in general appearance resemble ordinary sprocket wheels. Braces 8 v portions of the arms 3. and serve as means 1 foreflectually bracing the structure, the bar 2 extending-through the extremities of one of said braces The free end portions of the arms 3 are normally held in elevated positions with relation to the surface of the ground by means of coiled springs 9 which are connected with the said arms 3 and with rigid ortions of the frame of the automobile. A oot treadle or lever 10 is fulcrumed' upon the frame of the automobile within reach of one occupy- J ing the drivers seat, and a rod 11 connects},

the said lever 10 with the shaft 5.

that when the lever 10 1s swung the rod 11 will move longitudinally, whereby the arms 3 are swung and the roughened peripheries of the wheels 7 are brought into contact with the surface of the street or roadway. The teeth or roughened parts at the peripheries of these wheels will bite into the pavement or roadway sufliciently to prevent the machine from skidding laterally as it goes around curves or cornens. At the same time the pressure through the lever 10 will not be sufficient to cause the teeth upon the peripheries of the wheels 7 to damage or mar the surface of the street or roadway. As soon as the 'machine has passed-around a curve or has proceeded to such an extent where skidding is unlikely or impossible, pressure is removed from the lever 10, when the tension of the springs 9 comes into play and the arms 3 are swung so that the wheels 7 are elevated above the surface of the street or roadway.

Having thus described the invention, What is claimed as new is:

An anti-skid device including pivotally extremity to extend transversely through the prongs, wheels journaledupon the rounded extremities of the shaft, one between the prongs of each arm, the shaft being centrally enlarged and flattened, a pair of diagonal braces secured centrally and one within the other to the central enlarged flattened portion of the shaft, the extremities of said braces diverging and having their terminals secured in spaced relation to the intermediate portions of the arms, a brace extending parallel to the shaft and having its ends passed through the ends of one of the first-mentioned pair of braces and through the arms to secure said brace in place, a lever arm secured upon one end of the shaft, and means operatively connected with the lever arm for swinging said spaced arms.

In testimony whereof we afiixour signature in presence of two witnesses.

Witnesses:

EARL Coox, H. B. KLAPMEYER. 

